SPEC CPU(R)2017 Floating Point Rate Result New H3C Technologies Co., Ltd. H3C UniServer R4950 G7 (AMD EPYC 9965) CPU2017 License: 9066 Test date: Apr-2026 Test sponsor: New H3C Technologies Co., Ltd. Hardware availability: Oct-2024 Tested by: New H3C Technologies Co., Ltd. Software availability: Apr-2025 Base Base Base Peak Peak Peak Benchmarks Copies Run Time Rate Copies Run Time Rate --------------- ------- --------- --------- ------- --------- --------- 503.bwaves_r 384 452 8520 S 503.bwaves_r 384 452 8520 * 503.bwaves_r 384 452 8520 S 507.cactuBSSN_r 384 208 2340 S 507.cactuBSSN_r 384 207 2340 * 507.cactuBSSN_r 384 207 2340 S 508.namd_r 384 131 2780 S 508.namd_r 384 131 2780 * 508.namd_r 384 131 2780 S 510.parest_r 384 547 1840 S 510.parest_r 384 547 1840 * 510.parest_r 384 546 1840 S 511.povray_r 384 241 3720 S 511.povray_r 384 241 3720 * 511.povray_r 384 242 3710 S 519.lbm_r 384 512 790 S 519.lbm_r 384 511 792 S 519.lbm_r 384 511 792 * 521.wrf_r 384 709 1210 * 521.wrf_r 384 708 1210 S 521.wrf_r 384 709 1210 S 526.blender_r 384 177 3300 S 526.blender_r 384 177 3300 * 526.blender_r 384 177 3300 S 527.cam4_r 384 205 3270 S 527.cam4_r 384 207 3250 S 527.cam4_r 384 206 3250 * 538.imagick_r 384 70.1 13600 * 538.imagick_r 384 70.0 13600 S 538.imagick_r 384 70.1 13600 S 544.nab_r 384 111 5820 S 544.nab_r 384 111 5820 * 544.nab_r 384 111 5820 S 549.fotonik3d_r 384 2058 727 S 549.fotonik3d_r 384 2057 727 * 549.fotonik3d_r 384 2057 727 S 554.roms_r 384 810 753 S 554.roms_r 384 808 755 S 554.roms_r 384 810 754 * ================================================================================= 503.bwaves_r 384 452 8520 * 507.cactuBSSN_r 384 207 2340 * 508.namd_r 384 131 2780 * 510.parest_r 384 547 1840 * 511.povray_r 384 241 3720 * 519.lbm_r 384 511 792 * 521.wrf_r 384 709 1210 * 526.blender_r 384 177 3300 * 527.cam4_r 384 206 3250 * 538.imagick_r 384 70.1 13600 * 544.nab_r 384 111 5820 * 549.fotonik3d_r 384 2057 727 * 554.roms_r 384 810 754 * SPECrate(R)2017_fp_base 2530 SPECrate(R)2017_fp_peak Not Run HARDWARE -------- CPU Name: AMD EPYC 9965 Max MHz: 3700 Nominal: 2250 Enabled: 384 cores, 2 chips, 2 threads/core Orderable: 1,2 chips Cache L1: 32 KB I + 48 KB D on chip per core L2: 1 MB I+D on chip per core L3: 384 MB I+D on chip per chip, 32 MB shared / 16 cores Other: None Memory: 1536 GB (24 x 64 GB 2Rx4 PC5-6400B-R) Storage: 1 x 7.68 TB NVME SSD Other: CPU Cooling: Air SOFTWARE -------- OS: SUSE Linux Enterprise Server 15 SP7 kernel version 6.4.0-150700.51-default Compiler: C/C++/Fortran: Version 5.0.0 of AOCC Parallel: No Firmware: Version 7.30.19 released Feb-2026 File System: xfs System State: Run level 3 (multi-user) Base Pointers: 64-bit Peak Pointers: Not Applicable Other: None Power Management: BIOS and OS set to prefer performance at the cost of additional power usage. Compiler Notes -------------- The AMD64 AOCC Compiler Suite is available at http://developer.amd.com/amd-aocc/ Submit Notes ------------ The config file option 'submit' was used. 'numactl' was used to bind copies to the cores. See the configuration file for details. Operating System Notes ---------------------- 'ulimit -s unlimited' was used to set environment stack size limit 'ulimit -l 2097152' was used to set environment locked pages in memory limit runcpu command invoked through numactl i.e.: numactl --interleave=all runcpu To limit dirty cache to 8% of memory, 'sysctl -w vm.dirty_ratio=8' run as root. To limit swap usage to minimum necessary, 'sysctl -w vm.swappiness=1' run as root. To free node-local memory and avoid remote memory usage, 'sysctl -w vm.zone_reclaim_mode=1' run as root. To clear filesystem caches, 'sync; sysctl -w vm.drop_caches=3' run as root. To disable address space layout randomization (ASLR) to reduce run-to-run variability, 'sysctl -w kernel.randomize_va_space=0' run as root. To enable Transparent Hugepages (THP) for all allocations, 'echo always > /sys/kernel/mm/transparent_hugepage/enabled' and 'echo always > /sys/kernel/mm/transparent_hugepage/defrag' run as root. Environment Variables Notes --------------------------- Environment variables set by runcpu before the start of the run: LD_LIBRARY_PATH = "/home/cpu2017/amd_rate_aocc500_znver5_A_lib/lib:/home/cpu2017/amd_rate_aocc500_znver5_A_lib/lib32:" MALLOC_CONF = "retain:true" General Notes ------------- Binaries were compiled on a system with 2x AMD EPYC 9174F CPU + 1.5TiB Memory using RHEL 8.6 NA: The test sponsor attests, as of date of publication, that CVE-2017-5754 (Meltdown) is mitigated in the system as tested and documented. Yes: The test sponsor attests, as of date of publication, that CVE-2017-5753 (Spectre variant 1) is mitigated in the system as tested and documented. Yes: The test sponsor attests, as of date of publication, that CVE-2017-5715 (Spectre variant 2) is mitigated in the system as tested and documented. Platform Notes -------------- BIOS settings: SVM Mode = Disabled Power Profile Selection = High Performance Mode Determinism Slider = Power cTDP = 500 PPT = 500 NUMA nodes per socket = NPS 4 APBDIS = 1 Global C-states Control = Disabled Sysinfo program /home/cpu2017/bin/sysinfo Rev: r6732 of 2022-11-07 fe91c89b7ed5c36ae2c92cc097bec197 running on localhost Fri Apr 10 00:42:15 2026 SUT (System Under Test) info as seen by some common utilities. ------------------------------------------------------------ Table of contents ------------------------------------------------------------ 1. uname -a 2. w 3. Username 4. ulimit -a 5. sysinfo process ancestry 6. /proc/cpuinfo 7. lscpu 8. numactl --hardware 9. /proc/meminfo 10. who -r 11. Systemd service manager version: systemd 254 (254.24+suse.148.g83b9060b6e) 12. Services, from systemctl list-unit-files 13. Linux kernel boot-time arguments, from /proc/cmdline 14. cpupower frequency-info 15. sysctl 16. /sys/kernel/mm/transparent_hugepage 17. /sys/kernel/mm/transparent_hugepage/khugepaged 18. OS release 19. Disk information 20. /sys/devices/virtual/dmi/id 21. dmidecode 22. BIOS ------------------------------------------------------------ ------------------------------------------------------------ 1. uname -a Linux localhost 6.4.0-150700.51-default #1 SMP PREEMPT_DYNAMIC Wed Apr 30 21:35:43 UTC 2025 (6930611) x86_64 x86_64 x86_64 GNU/Linux ------------------------------------------------------------ 2. w 00:42:15 up 9:39, 2 users, load average: 0.32, 0.70, 76.29 USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT root tty1 - 15:03 31.00s 1.21s 0.14s /bin/bash ./amd_rate_aocc500_znver5_A1.sh root pts/0 172.17.74.10 16:10 8:24m 0.04s 0.04s -bash ------------------------------------------------------------ 3. Username From environment variable $USER: root ------------------------------------------------------------ 4. ulimit -a core file size (blocks, -c) unlimited data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 6186166 max locked memory (kbytes, -l) 2097152 max memory size (kbytes, -m) unlimited open files (-n) 1024 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) unlimited cpu time (seconds, -t) unlimited max user processes (-u) 6186166 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited ------------------------------------------------------------ 5. sysinfo process ancestry /usr/lib/systemd/systemd --switched-root --system --deserialize=31 login -- root -bash python3 ./run_amd_rate_aocc500_znver5_A1.py /bin/bash ./amd_rate_aocc500_znver5_A1.sh runcpu --config amd_rate_aocc500_znver5_A1.cfg --tune base --reportable --iterations 3 fprate runcpu --configfile amd_rate_aocc500_znver5_A1.cfg --tune base --reportable --iterations 3 --nopower --runmode rate --tune base --size test:train:refrate fprate --nopreenv --note-preenv --logfile $SPEC/tmp/CPU2017.020/templogs/preenv.fprate.020.0.log --lognum 020.0 --from_runcpu 2 specperl $SPEC/bin/sysinfo $SPEC = /home/cpu2017 ------------------------------------------------------------ 6. /proc/cpuinfo model name : AMD EPYC 9965 192-Core Processor vendor_id : AuthenticAMD cpu family : 26 model : 17 stepping : 0 microcode : 0xb101054 bugs : sysret_ss_attrs spectre_v1 spectre_v2 spec_store_bypass srso TLB size : 192 4K pages cpu cores : 192 siblings : 384 2 physical ids (chips) 768 processors (hardware threads) physical id 0: core ids 0-191 physical id 1: core ids 0-191 physical id 0: apicids 0-383 physical id 1: apicids 512-895 Caution: /proc/cpuinfo data regarding chips, cores, and threads is not necessarily reliable, especially for virtualized systems. Use the above data carefully. ------------------------------------------------------------ 7. lscpu From lscpu from util-linux 2.40.4: Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Address sizes: 52 bits physical, 57 bits virtual Byte Order: Little Endian CPU(s): 768 On-line CPU(s) list: 0-767 Vendor ID: AuthenticAMD Model name: AMD EPYC 9965 192-Core Processor CPU family: 26 Model: 17 Thread(s) per core: 2 Core(s) per socket: 192 Socket(s): 2 Stepping: 0 Frequency boost: enabled CPU(s) scaling MHz: 101% CPU max MHz: 2250.0000 CPU min MHz: 1500.0000 BogoMIPS: 4489.65 Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good amd_lbr_v2 nopl nonstop_tsc cpuid extd_apicid aperfmperf rapl pni pclmulqdq monitor ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 hw_pstate ssbd mba perfmon_v2 ibrs ibpb stibp ibrs_enhanced vmmcall fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid cqm rdt_a avx512f avx512dq rdseed adx smap avx512ifma clflushopt clwb avx512cd sha_ni avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local user_shstk avx_vnni avx512_bf16 clzero irperf xsaveerptr rdpru wbnoinvd amd_ppin cppc amd_ibpb_ret arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif x2avic v_spec_ctrl vnmi avx512vbmi umip pku ospke avx512_vbmi2 gfni vaes vpclmulqdq avx512_vnni avx512_bitalg avx512_vpopcntdq la57 rdpid bus_lock_detect movdiri movdir64b overflow_recov succor smca fsrm avx512_vp2intersect flush_l1d debug_swap hv_inuse_wr_allowed srso_user_kernel_no amd_lbr_pmc_freeze L1d cache: 18 MiB (384 instances) L1i cache: 12 MiB (384 instances) L2 cache: 384 MiB (384 instances) L3 cache: 768 MiB (24 instances) NUMA node(s): 8 NUMA node0 CPU(s): 0-47,384-431 NUMA node1 CPU(s): 48-95,432-479 NUMA node2 CPU(s): 96-143,480-527 NUMA node3 CPU(s): 144-191,528-575 NUMA node4 CPU(s): 192-239,576-623 NUMA node5 CPU(s): 240-287,624-671 NUMA node6 CPU(s): 288-335,672-719 NUMA node7 CPU(s): 336-383,720-767 Vulnerability Gather data sampling: Not affected Vulnerability Itlb multihit: Not affected Vulnerability L1tf: Not affected Vulnerability Mds: Not affected Vulnerability Meltdown: Not affected Vulnerability Mmio stale data: Not affected Vulnerability Reg file data sampling: Not affected Vulnerability Retbleed: Not affected Vulnerability Spec rstack overflow: Mitigation; IBPB on VMEXIT only Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl Vulnerability Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization Vulnerability Spectre v2: Mitigation; Enhanced / Automatic IBRS; IBPB conditional; STIBP always-on; RSB filling; PBRSB-eIBRS Not affected; BHI Not affected Vulnerability Srbds: Not affected Vulnerability Tsx async abort: Not affected From lscpu --cache: NAME ONE-SIZE ALL-SIZE WAYS TYPE LEVEL SETS PHY-LINE COHERENCY-SIZE L1d 48K 18M 12 Data 1 64 1 64 L1i 32K 12M 8 Instruction 1 64 1 64 L2 1M 384M 16 Unified 2 1024 1 64 L3 32M 768M 16 Unified 3 32768 1 64 ------------------------------------------------------------ 8. numactl --hardware NOTE: a numactl 'node' might or might not correspond to a physical chip. available: 8 nodes (0-7) node 0 cpus: 0-47,384-431 node 0 size: 192658 MB node 0 free: 191484 MB node 1 cpus: 48-95,432-479 node 1 size: 193472 MB node 1 free: 192482 MB node 2 cpus: 96-143,480-527 node 2 size: 193510 MB node 2 free: 192428 MB node 3 cpus: 144-191,528-575 node 3 size: 193510 MB node 3 free: 192303 MB node 4 cpus: 192-239,576-623 node 4 size: 193510 MB node 4 free: 192426 MB node 5 cpus: 240-287,624-671 node 5 size: 193510 MB node 5 free: 192462 MB node 6 cpus: 288-335,672-719 node 6 size: 193510 MB node 6 free: 191321 MB node 7 cpus: 336-383,720-767 node 7 size: 192884 MB node 7 free: 191907 MB node distances: node 0 1 2 3 4 5 6 7 0: 10 12 12 12 32 32 32 32 1: 12 10 12 12 32 32 32 32 2: 12 12 10 12 32 32 32 32 3: 12 12 12 10 32 32 32 32 4: 32 32 32 32 10 12 12 12 5: 32 32 32 32 12 10 12 12 6: 32 32 32 32 12 12 10 12 7: 32 32 32 32 12 12 12 10 ------------------------------------------------------------ 9. /proc/meminfo MemTotal: 1583685048 kB ------------------------------------------------------------ 10. who -r run-level 3 Apr 9 15:03 ------------------------------------------------------------ 11. Systemd service manager version: systemd 254 (254.24+suse.148.g83b9060b6e) Default Target Status multi-user running ------------------------------------------------------------ 12. Services, from systemctl list-unit-files STATE UNIT FILES enabled apparmor auditd cron getty@ irqbalance issue-generator kbdsettings kdump kdump-early kdump-notify nvmefc-boot-connections nvmf-autoconnect postfix purge-kernels rollback sshd systemd-pstore wicked wickedd-auto4 wickedd-dhcp4 wickedd-dhcp6 wickedd-nanny enabled-runtime systemd-remount-fs disabled boot-sysctl ca-certificates chrony-wait chronyd console-getty cups cups-browsed debug-shell ebtables firewalld fsidd grub2-once haveged hwloc-dump-hwdata issue-add-ssh-keys kexec-load lunmask nfs nfs-blkmap rpcbind rpmconfigcheck serial-getty@ systemd-boot-check-no-failures systemd-confext systemd-network-generator systemd-sysext systemd-time-wait-sync systemd-timesyncd indirect pcscd systemd-userdbd wickedd ------------------------------------------------------------ 13. Linux kernel boot-time arguments, from /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-6.4.0-150700.51-default root=UUID=4953839d-11e1-46da-9a81-d08855946185 splash=silent resume=/dev/disk/by-uuid/dda201e9-fc6d-4e40-8516-a7f4746f0e49 mitigations=auto quiet security=apparmor crashkernel=379M,high crashkernel=72M,low ------------------------------------------------------------ 14. cpupower frequency-info analyzing CPU 152: current policy: frequency should be within 1.50 GHz and 2.25 GHz. The governor "performance" may decide which speed to use within this range. boost state support: Supported: yes Active: yes ------------------------------------------------------------ 15. sysctl kernel.numa_balancing 1 kernel.randomize_va_space 0 vm.compaction_proactiveness 20 vm.dirty_background_bytes 0 vm.dirty_background_ratio 10 vm.dirty_bytes 0 vm.dirty_expire_centisecs 3000 vm.dirty_ratio 8 vm.dirty_writeback_centisecs 500 vm.dirtytime_expire_seconds 43200 vm.extfrag_threshold 500 vm.min_unmapped_ratio 1 vm.nr_hugepages 0 vm.nr_hugepages_mempolicy 0 vm.nr_overcommit_hugepages 0 vm.swappiness 1 vm.watermark_boost_factor 15000 vm.watermark_scale_factor 10 vm.zone_reclaim_mode 1 ------------------------------------------------------------ 16. /sys/kernel/mm/transparent_hugepage defrag [always] defer defer+madvise madvise never enabled [always] madvise never hpage_pmd_size 2097152 shmem_enabled always within_size advise [never] deny force ------------------------------------------------------------ 17. /sys/kernel/mm/transparent_hugepage/khugepaged alloc_sleep_millisecs 60000 defrag 1 max_ptes_none 511 max_ptes_shared 256 max_ptes_swap 64 pages_to_scan 4096 scan_sleep_millisecs 10000 ------------------------------------------------------------ 18. OS release From /etc/*-release /etc/*-version os-release SUSE Linux Enterprise Server 15 SP7 ------------------------------------------------------------ 19. Disk information SPEC is set to: /home/cpu2017 Filesystem Type Size Used Avail Use% Mounted on /dev/nvme0n1p4 xfs 482G 33G 450G 7% /home ------------------------------------------------------------ 20. /sys/devices/virtual/dmi/id Vendor: New H3C Technologies Co., Ltd. Product: H3C UniServer R4950 G7 Product Family: AMD Turin Server Serial: 210235A55CH251000004 ------------------------------------------------------------ 21. dmidecode Additional information from dmidecode 3.6 follows. WARNING: Use caution when you interpret this section. The 'dmidecode' program reads system data which is "intended to allow hardware to be accurately determined", but the intent may not be met, as there are frequent changes to hardware, firmware, and the "DMTF SMBIOS" standard. Memory: 13x SK Hynix HMCG94AHBRA480N 64 GB 2 rank 6400 1x SK Hynix HMCG94AHBRA481N 64 GB 2 rank 6400 1x SK Hynix HMCG94AHBRA485N 64 GB 2 rank 6400 9x SK Hynix HMCG94AHBRA487N 64 GB 2 rank 6400 ------------------------------------------------------------ 22. BIOS (This section combines info from /sys/devices and dmidecode.) BIOS Vendor: American Megatrends International, LLC. BIOS Version: 7.30.19 BIOS Date: 02/10/2026 BIOS Revision: 5.35 Firmware Revision: 2.13 Compiler Version Notes ---------------------- ============================================================================================================ C | 519.lbm_r(base) 538.imagick_r(base) 544.nab_r(base) ------------------------------------------------------------------------------------------------------------ AMD clang version 17.0.6 (CLANG: AOCC_5.0.0-Build#1316 2024_09_09) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /opt/AMD/aocc/aocc-compiler-rel-5.0.0-4925-1316/bin ------------------------------------------------------------------------------------------------------------ ============================================================================================================ C++ | 508.namd_r(base) 510.parest_r(base) ------------------------------------------------------------------------------------------------------------ AMD clang version 17.0.6 (CLANG: AOCC_5.0.0-Build#1316 2024_09_09) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /opt/AMD/aocc/aocc-compiler-rel-5.0.0-4925-1316/bin ------------------------------------------------------------------------------------------------------------ ============================================================================================================ C++, C | 511.povray_r(base) 526.blender_r(base) ------------------------------------------------------------------------------------------------------------ AMD clang version 17.0.6 (CLANG: AOCC_5.0.0-Build#1316 2024_09_09) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /opt/AMD/aocc/aocc-compiler-rel-5.0.0-4925-1316/bin AMD clang version 17.0.6 (CLANG: AOCC_5.0.0-Build#1316 2024_09_09) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /opt/AMD/aocc/aocc-compiler-rel-5.0.0-4925-1316/bin ------------------------------------------------------------------------------------------------------------ ============================================================================================================ C++, C, Fortran | 507.cactuBSSN_r(base) ------------------------------------------------------------------------------------------------------------ AMD clang version 17.0.6 (CLANG: AOCC_5.0.0-Build#1316 2024_09_09) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /opt/AMD/aocc/aocc-compiler-rel-5.0.0-4925-1316/bin AMD clang version 17.0.6 (CLANG: AOCC_5.0.0-Build#1316 2024_09_09) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /opt/AMD/aocc/aocc-compiler-rel-5.0.0-4925-1316/bin AMD clang version 17.0.6 (CLANG: AOCC_5.0.0-Build#1316 2024_09_09) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /opt/AMD/aocc/aocc-compiler-rel-5.0.0-4925-1316/bin ------------------------------------------------------------------------------------------------------------ ============================================================================================================ Fortran | 503.bwaves_r(base) 549.fotonik3d_r(base) 554.roms_r(base) ------------------------------------------------------------------------------------------------------------ AMD clang version 17.0.6 (CLANG: AOCC_5.0.0-Build#1316 2024_09_09) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /opt/AMD/aocc/aocc-compiler-rel-5.0.0-4925-1316/bin ------------------------------------------------------------------------------------------------------------ ============================================================================================================ Fortran, C | 521.wrf_r(base) 527.cam4_r(base) ------------------------------------------------------------------------------------------------------------ AMD clang version 17.0.6 (CLANG: AOCC_5.0.0-Build#1316 2024_09_09) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /opt/AMD/aocc/aocc-compiler-rel-5.0.0-4925-1316/bin AMD clang version 17.0.6 (CLANG: AOCC_5.0.0-Build#1316 2024_09_09) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /opt/AMD/aocc/aocc-compiler-rel-5.0.0-4925-1316/bin ------------------------------------------------------------------------------------------------------------ Base Compiler Invocation ------------------------ C benchmarks: clang C++ benchmarks: clang++ Fortran benchmarks: flang Benchmarks using both Fortran and C: flang clang Benchmarks using both C and C++: clang++ clang Benchmarks using Fortran, C, and C++: clang++ clang flang Base Portability Flags ---------------------- 503.bwaves_r: -DSPEC_LP64 507.cactuBSSN_r: -DSPEC_LP64 508.namd_r: -DSPEC_LP64 510.parest_r: -DSPEC_LP64 511.povray_r: -DSPEC_LP64 519.lbm_r: -DSPEC_LP64 521.wrf_r: -DSPEC_CASE_FLAG -Mbyteswapio -DSPEC_LP64 526.blender_r: -funsigned-char -DSPEC_LP64 527.cam4_r: -DSPEC_CASE_FLAG -DSPEC_LP64 538.imagick_r: -DSPEC_LP64 544.nab_r: -DSPEC_LP64 549.fotonik3d_r: -DSPEC_LP64 554.roms_r: -DSPEC_LP64 Base Optimization Flags ----------------------- C benchmarks: -m64 -Wl,-mllvm -Wl,-align-all-nofallthru-blocks=6 -Wl,-mllvm -Wl,-reduce-array-computations=3 -Wl,-mllvm -Wl,-ldist-scalar-expand -fenable-aggressive-gather -O3 -march=znver5 -fveclib=AMDLIBM -ffast-math -fno-PIE -no-pie -flto -fstruct-layout=7 -mllvm -unroll-threshold=50 -mllvm -inline-threshold=1000 -fremap-arrays -fstrip-mining -mllvm -reduce-array-computations=3 -zopt -lamdlibm -lamdalloc -lflang -ldl C++ benchmarks: -m64 -std=c++14 -Wl,-mllvm -Wl,-align-all-nofallthru-blocks=6 -Wl,-mllvm -Wl,-reduce-array-computations=3 -Wl,-mllvm -Wl,-x86-use-vzeroupper=false -Wl,-mllvm -Wl,-extra-inliner -O3 -march=znver5 -fveclib=AMDLIBM -ffast-math -flto -mllvm -unroll-threshold=100 -mllvm -loop-unswitch-threshold=200000 -mllvm -reduce-array-computations=3 -zopt -lamdlibm -lamdalloc -lflang -ldl Fortran benchmarks: -m64 -Wl,-mllvm -Wl,-align-all-nofallthru-blocks=6 -Wl,-mllvm -Wl,-reduce-array-computations=3 -Wl,-mllvm -Wl,-enable-X86-prefetching -Wl,-mllvm -Wl,-enable-aggressive-gather=true -Wl,-mllvm -Wl,-enable-masked-gather-sequence=false -O3 -march=znver5 -fveclib=AMDLIBM -ffast-math -flto -Mrecursive -funroll-loops -mllvm -lsr-in-nested-loop -mllvm -reduce-array-computations=3 -fepilog-vectorization-of-inductions -zopt -lamdlibm -lamdalloc -lflang -ldl Benchmarks using both Fortran and C: -m64 -Wl,-mllvm -Wl,-align-all-nofallthru-blocks=6 -Wl,-mllvm -Wl,-reduce-array-computations=3 -Wl,-mllvm -Wl,-enable-X86-prefetching -Wl,-mllvm -Wl,-enable-aggressive-gather=true -Wl,-mllvm -Wl,-enable-masked-gather-sequence=false -O3 -march=znver5 -fveclib=AMDLIBM -ffast-math -fno-PIE -no-pie -flto -fstruct-layout=7 -mllvm -unroll-threshold=50 -mllvm -inline-threshold=1000 -fremap-arrays -fstrip-mining -mllvm -reduce-array-computations=3 -zopt -Mrecursive -funroll-loops -mllvm -lsr-in-nested-loop -fepilog-vectorization-of-inductions -lamdlibm -lamdalloc -lflang -ldl Benchmarks using both C and C++: -m64 -std=c++14 -Wl,-mllvm -Wl,-align-all-nofallthru-blocks=6 -Wl,-mllvm -Wl,-reduce-array-computations=3 -Wl,-mllvm -Wl,-x86-use-vzeroupper=false -Wl,-mllvm -Wl,-extra-inliner -O3 -march=znver5 -fveclib=AMDLIBM -ffast-math -fno-PIE -no-pie -flto -fstruct-layout=7 -mllvm -unroll-threshold=50 -mllvm -inline-threshold=1000 -fremap-arrays -fstrip-mining -mllvm -reduce-array-computations=3 -zopt -mllvm -unroll-threshold=100 -mllvm -loop-unswitch-threshold=200000 -lamdlibm -lamdalloc -lflang -ldl Benchmarks using Fortran, C, and C++: -m64 -std=c++14 -Wl,-mllvm -Wl,-align-all-nofallthru-blocks=6 -Wl,-mllvm -Wl,-reduce-array-computations=3 -Wl,-mllvm -Wl,-x86-use-vzeroupper=false -Wl,-mllvm -Wl,-extra-inliner -O3 -march=znver5 -fveclib=AMDLIBM -ffast-math -fno-PIE -no-pie -flto -fstruct-layout=7 -mllvm -unroll-threshold=50 -mllvm -inline-threshold=1000 -fremap-arrays -fstrip-mining -mllvm -reduce-array-computations=3 -zopt -mllvm -unroll-threshold=100 -mllvm -loop-unswitch-threshold=200000 -Mrecursive -funroll-loops -mllvm -lsr-in-nested-loop -fepilog-vectorization-of-inductions -lamdlibm -lamdalloc -lflang -ldl Base Other Flags ---------------- C benchmarks: -Wno-unused-command-line-argument C++ benchmarks: -Wno-unused-command-line-argument Fortran benchmarks: -Wno-unused-command-line-argument Benchmarks using both Fortran and C: -Wno-unused-command-line-argument Benchmarks using both C and C++: -Wno-unused-command-line-argument Benchmarks using Fortran, C, and C++: -Wno-unused-command-line-argument The flags files that were used to format this result can be browsed at http://www.spec.org/cpu2017/flags/aocc500-flags.2025-11-05.html http://www.spec.org/cpu2017/flags/New_H3C-Platform-AMD-Settings-V2.0-Turin.html You can also download the XML flags sources by saving the following links: http://www.spec.org/cpu2017/flags/aocc500-flags.2025-11-05.xml http://www.spec.org/cpu2017/flags/New_H3C-Platform-AMD-Settings-V2.0-Turin.xml SPEC CPU and SPECrate are registered trademarks of the Standard Performance Evaluation Corporation. All other brand and product names appearing in this result are trademarks or registered trademarks of their respective holders. ---------------------------------------------------------------------------------------------------------------------------------- For questions about this result, please contact the tester. For other inquiries, please contact info@spec.org. Copyright 2017-2026 Standard Performance Evaluation Corporation Tested with SPEC CPU(R)2017 v1.1.9 on 2026-04-09 12:42:14-0400. Report generated on 2026-06-02 16:17:09 by CPU2017 text formatter v6255. Originally published on 2026-06-02.